<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			*{
				margin: 0;
				padding: 0;
			}
			.one{
				width: 600px;
				height: 400px;
				background-color: pink;
				position: relative;
				top: 50px;
				left: 50px;
			}
			.box{
				width: 200px;
				height: 200px;
				background-color: black;
				/* position: static;
				top: 20px */
				/* margin-top: 50px; */
				/* position: relative; */
				/* top: 20px;
				left: 40px; */
				/*   */
				/* position: absolute;
				left: 30px; */
				position: fixed;
				right:30px;
				bottom: 50px;
				}
		</style>
	</head>
	<body>
		<div class="one">
			<div class="box"></div>
		</div>
		<div class="one"></div>
		<div class="one"></div>
		<div class="one"></div>
		<div class="one"></div>
		<div class="one"></div>
		<div class="one"></div>
		<div class="one"></div>
		<div class="one"></div>
		<p>北京天安门</p>
	</body>
</html>